/Engine/Source/Runtime/Engine/Classes/PhysicsEngine/PhysicsAsset.h
Gets a constraint by its joint name
ConstraintInstance accessor to the constraint data
[FConstraintInstanceAccessor](API\Runtime\Engine\PhysicsEngine\FConstraintInstanceAccessor) GetConstraintByBoneNames ( [FName](API\Runtime\Core\UObject\FName) Bone1Name, [FName](API\Runtime\Core\UObject\FName) Bone2Name )